Recent content by alliecr

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    Sound, balloons, light, & pressure questions

    Homework Statement Question 1: A gram of radioactive material has a half life of x. Homework Equations Please not that this is a generally question and I am not actually solving for X. After x amount of time, how much will be left? The Attempt at a Solution I believe the answer is...
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    Graphing a function on a given interval ?

    Graphing a function on a given interval...?? My problem is: Use a graphing calculator to graph the function...? ...over the given interval f(x)= -x^4+3x^3-4x+3 (-2,3). How do you graph something on a specific interval? P.S. I have the Casio fx-9750G PLUS graphing calculator.
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    Undergrad Wrong Answer From Calculator for x^2-1 (all over) x+4

    Where does the+1 come from? I had this before I got my answer: [tex]4a^{2}-2a-2a+1-1...the ones would cancel out right?
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    Undergrad Wrong Answer From Calculator for x^2-1 (all over) x+4

    I am not getting the answer that my calculator is giving me for the following: Find the following values for x^2-1 (all over) x+4 f(2a-1) I am getting 4a^2 (all over) 2a+3 for my final answer and my calculator is getting (2a-1)^2-1 (all over) 2a+3. What did I do wrong? Also, how do...
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    High School What Are the Steps to Solve These Circle and Slope Math Problems?

    1.) How do you answer this? Find the equation of the line that has a slope undefined and passes through the points (3, -4). I got y=-4 ------------------------ 2.) Write the standard and general equations of the circle with radius 4 and center (1,2). I got STANDARD: (x-1)^2 +...
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    Photosynthesis: Impact of Color on Rate & CO2 Levels Explained

    In which color will the rate of photosynthesis be greatest, smallest and how will this be reflected in the CO2 levels, why?
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    High School Explaining the Substitution Rule: Easier Terms for Allison

    I know the product, quotient, and chain rules. I get confused when I get to the something du= something dx. Now, I have to take that and put it in the original. Please explain that part. Is there like a formula or something for that part?
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    High School Explaining the Substitution Rule: Easier Terms for Allison

    I understand that u is just another letter, but after you take the hardest part of the equation and find the derivative you have some du=dx. Now you must write that in the form of the equation. This is the part where I get stuck.
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    High School Explaining the Substitution Rule: Easier Terms for Allison

    Yes, I know how to do those things. I mostly get confused when you have to write the problem with u an du.
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    High School Explaining the Substitution Rule: Easier Terms for Allison

    Here are the problems that I have. Thanks again, Allison
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    High School Explaining the Substitution Rule: Easier Terms for Allison

    Can someone please explain the Substitution Rule to me in easier terms? I am soooo confused! Thanks, Allison